package com.sky.service.impl;

import com.sky.context.BaseContext;
import com.sky.dto.ShoppingCartDTO;
import com.sky.entity.Dish;
import com.sky.entity.Setmeal;
import com.sky.entity.ShoppingCart;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.mapper.ShoppingCartMapper;
import com.sky.service.ShoppingCartService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class ShoppingCartServiceImpl implements ShoppingCartService {
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;

    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private SetmealMapper setmealMapper;

    @Override
    public void add(ShoppingCartDTO shoppingCartDTO) {
        ShoppingCart shoppingCart = new ShoppingCart();
        //获取其他数据
        BeanUtils.copyProperties(shoppingCartDTO,shoppingCart);
        //获取当前登录用户id
        shoppingCart.setUserId(BaseContext.getCurrentId());

        List<ShoppingCart> list = shoppingCartMapper.list(shoppingCart);

        if(list != null && list.size() > 0){
            ShoppingCart cart = list.get(0);
            cart.setNumber(cart.getNumber()+1);
            shoppingCartMapper.updateNumberById(cart);
        }
        else{
            Long dishId = shoppingCartDTO.getDishId();
            if(dishId != null){
                //添加到购物车
                Dish dish = dishMapper.getById(dishId);
                shoppingCart.setName(dish.getName());
                shoppingCart.setImage(dish.getImage());
                shoppingCart.setAmount(dish.getPrice());
            }
            else{
                Long setmealId = shoppingCartDTO.getSetmealId();
                Setmeal setmeal = setmealMapper.getById(setmealId);
                shoppingCart.setName(setmeal.getName());
                shoppingCart.setImage(setmeal.getImage());
                shoppingCart.setAmount(setmeal.getPrice());
            }
            shoppingCart.setNumber(1);
            shoppingCart.setCreateTime(LocalDateTime.now());
            shoppingCart.setDishFlavor(shoppingCartDTO.getDishFlavor());
            shoppingCartMapper.insert(shoppingCart);
        }



    }

    @Override
    public List<ShoppingCart> list() {
        long userId = BaseContext.getCurrentId();
        List<ShoppingCart> list =shoppingCartMapper.listAll(userId);
        return list;
    }

    @Override
    public void deleteAll() {
        long userId = BaseContext.getCurrentId();
        shoppingCartMapper.deleteAll(userId);
    }

    @Override
    public void remove(ShoppingCartDTO shoppingCartDTO) {
        ShoppingCart shoppingCart = new ShoppingCart();
        //获取其他数据
        BeanUtils.copyProperties(shoppingCartDTO,shoppingCart);
        //获取当前登录用户id
        shoppingCart.setUserId(BaseContext.getCurrentId());

        ShoppingCart shoppingCart1 = shoppingCartMapper.selcteOneDish(shoppingCart);
        int number = shoppingCart1.getNumber();
        if(number == 1){
            shoppingCartMapper.deleteById(shoppingCart1.getId());
        }else{
            shoppingCart1.setNumber(number-1);
            shoppingCartMapper.deleteOne(shoppingCart1);
        }





    }

}
